DNA degenerating works like this: A+B = C C+a = A (a has to meet requirements to digivolve into A) C+b = B (b has to meet requirements to digivolve into B) where a and be are the pre-evolution of A and B, respectively. For example: Here are the requirements to DNA digivolve into Alphamon: - MagnaAngemon + DoruGreymon - Magnamon + DoruGreymon - MagnaAngemon + Magnamon (Lv61+, Holy EXP45000+, Spirit 400+) Suppose that Alphamon doesn't have an evolution line just for explanation's sake. You can DNA degenerate Alphamon into any one of the 3 ingredient digimon's line. All you need to do is have a previous form of the ingredient digimon. If you want to DNA Degenerate into Magnamon, you need to DNA digivolve Alphamon with Veemon. If you want to DNA Degenerate into MagnaAngemon, you need to DNA digivolve Alphamon with Angemon. If you want to DNA Degenerate into DoruGreymon, you need to DNA digivolve Alphamon with Dorugamon. Say you want to go into MagnaAngemon's line. Angemon will need to have fulfilled the requirements to "digivolve" into the respective Ultimate level digimon. As an example, if you want to DNA degenerate Alphamon into MagnaAngemon, you need Angemonto have [Lv34+, Spr 160+, Holy EXP3100+] - The requirements for Angemon to digivolve into MagnaAngemon. THEN you can DNA Digivolve Alphamon with Angemon.